Nurse the baby, your protection against trouble, WPA poster, ca. 1937
The pattern
This still is filed under Image carries the claim.
Define
One image does the entire argument. Copy, if any, is a caption, not a second ad.
Mechanism
Pictorial claim. The picture is readable as a sentence. If we need a paragraph, we picked the wrong picture.
Verdict
The idea is visual and the surface is a poster, a feed, or a silent frame.
Why it works
The picture argues with a gaze: the mother's eyes are drawn looking down and to the right, so the reader's eye is handed straight into the headline panel, and the baby is left half-drawn so the face and the line carry the message instead. Colour is limited to what a screen print can hold and the shapes are cut-paper simple, which keeps it legible at corridor distance. The copy converts an instruction into self-interest - your protection - and keeps trouble undefined so every fear a reader brings fits inside it. The close is a two-step ask: read a free pamphlet first, then see a doctor, with the cheap action placed before the expensive one.
Steal this when
Use this when you need behaviour change from an audience that already knows what they are supposed to do. Reframe the instruction as the reader's own protection, keep the threat word vague, and make the first requested step free and effortless.